Buggy code:
public class ClassFileReader extends ClassFileStruct implements AttributeNamesConstants , IBinaryType { private int constantPoolCount ; private int [ ] constantPoolOffsets ; private int accessFlags ; private char [ ] className ; private char [ ] superclassName ; private int interfacesCount ; private char [ ] [ ] interfaceNames ; private int fieldsCount ; private FieldInfo [ ] fields ; private int methodsCount ; private MethodInfo [ ] methods ; private InnerClassInfo [ ] innerInfos ; private char [ ] sourceFileName ; private InnerClassInfo innerInfo ; private char [ ] classFileName ; private int classNameIndex ; private int innerInfoIndex ; public ClassFileReader ( byte [ ] classFileBytes , char [ ] fileName , boolean fullyInitialize ) throws ClassFormatException { } public ClassFileReader ( byte [ ] classFileBytes , char [ ] fileName ) throws ClassFormatException { } public int accessFlags ( ) { } private char [ ] getConstantClassNameAt ( int constantPoolIndex ) { } public int [ ] getConstantPoolOffsets ( ) { } public char [ ] getEnclosingTypeName ( ) { <START_BUG> if ( ( this . innerInfo ) != null ) { <END_BUG> return this . innerInfo . getEnclosingTypeName ( ) ; } return null ; } public IBinaryField [ ] getFields ( ) { } public char [ ] getFileName ( ) { } public char [ ] getInnerSourceName ( ) { } public char [ ] [ ] getInterfaceNames ( ) { } public IBinaryNestedType [ ] getMemberTypes ( ) { } public IBinaryMethod [ ] getMethods ( ) { } public int getModifiers ( ) { } public char [ ] getName ( ) { } public char [ ] getSuperclassName ( ) { } public boolean isAnonymous ( ) { } public boolean isBinaryType ( ) { } public boolean isClass ( ) { } public boolean isInterface ( ) { } public boolean isLocal ( ) { } public boolean isMember ( ) { } public boolean isNestedType ( ) { } public static ClassFileReader read ( File file ) throws IOException , ClassFormatException { } public static ClassFileReader read ( File file , boolean fullyInitialize ) throws IOException , ClassFormatException { } public static ClassFileReader read ( String fileName ) throws IOException , ClassFormatException { } public static ClassFileReader read ( String fileName , boolean fullyInitialize ) throws IOException , ClassFormatException { } public static ClassFileReader read ( ZipFile zip , String filename ) throws IOException , ClassFormatException { } public static ClassFileReader read ( ZipFile zip , String filename , boolean fullyInitialize ) throws IOException , ClassFormatException { } public char [ ] sourceFileName ( ) { } public String toString ( ) { } public boolean hasStructuralChanges ( byte [ ] newBytes ) { } public boolean hasStructuralChanges ( byte [ ] newBytes , boolean orderRequired , boolean excludesSynthetic ) { } private boolean hasNonSyntheticFieldChanges ( FieldInfo [ ] currentFieldInfos , FieldInfo [ ] otherFieldInfos ) { } private boolean hasStructuralFieldChanges ( FieldInfo currentFieldInfo , FieldInfo otherFieldInfo ) { } private boolean hasNonSyntheticMethodChanges ( MethodInfo [ ] currentMethodInfos , MethodInfo [ ] otherMethodInfos ) { } private boolean hasStructuralMethodChanges ( MethodInfo currentMethodInfo , MethodInfo otherMethodInfo ) { } private void initialize ( ) { } protected void reset ( ) { } }

Fix:
if ( ( ( this . innerInfo ) != null ) && ( ! ( this . isAnonymous ( ) ) ) ) {